(一). 单项选择。(10分)( )1. How much did you _ buying the new bike?Three hundred yuan. A. payB. costC. takeD. spend( )2. Mike felt sad because he failed his exam yesterday. Im sorry to hear that. Lets _. A. cheer him onB. cheer on himC. cheer him upD. cheer up him( )3. Some children were skating on the ice happily. Suddenly one of them _ the water and the other children felt _. A. falls into; madB. fell into; frightenedC. fall into; mad D. fe